Cell activation and deactivation
A wireless device restarts a first deactivation timer for a first cell, in response to at least one of: receiving downlink control information comprising an uplink grant or a downlink assignment indicating a resource of a second cell; or communicating a transport block via a configured grant resource of the second cell.
1 . A wireless device comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
restart a first deactivation timer of a first cell in response to at least one of:
receiving first downlink control information comprising a first uplink grant or a first downlink assignment indicating a resource of the first cell; or
communicating a first transport block via a first configured grant resource of the first cell;
restart a second deactivation timer of a second cell, in response to at least one of:
receiving second downlink control information comprising a second uplink grant or a second downlink assignment indicating a resource of the second cell; or
communicating a second transport block via a second configured grant resource of the second cell;
in response to the first deactivation timer expiring, determine not to deactivate the first cell based on the second deactivation timer not being expired; and
in response to the first deactivation timer and the second deactivation timer expiring, deactivate the first cell and the second cell.
2 . The wireless device of claim 1 , wherein the first cell is associated with a first physical cell identifier (PCI), and the second cell is associated with a second PCI.
3 . The wireless device of claim 1 , wherein the instructions further cause the wireless device to receive at least one configuration message comprising:
first configuration parameters of the first cell; and
second configuration parameters associated with the first cell and indicating one or more resources of the second cell.
4 . The wireless device of claim 3 , wherein the second configuration parameters indicating the second cell are for the wireless device to use resources of the second cell as at least one of:
resources of the first cell;
a transmission and reception point (TRP) of the first cell; or
a transmission configuration indication (TCI) state of the first cell.
5 . The wireless device of claim 3 , wherein:
the at least one configuration message further comprises a radio resource control (RRC) configuration message comprising a second time value of the second deactivation timer of the second cell; and
the instructions further cause the wireless device to:
determine an expiration of the first deactivation timer of the first cell; and
keep an active state of the first cell, while the first deactivation timer of the first cell is expired, based on at least one of:
the deactivation timer of the second cell being not expired or running; or
communication via the second cell.
6 . The wireless device of claim 3 , wherein the at least one configuration message comprises a first time value of the first deactivation timer of the first cell.
7 . The wireless device of claim 1 , wherein the instructions further cause the wireless device to:
receive at least one control parameter indicating a transmission configuration indication (TCI) state associated with at least one downlink reference signal of the second cell, wherein receiving the at least one control parameter is via at least one of:
a medium access control (MAC) control element (CE);
downlink control information (DCI) via a physical downlink control channel (PDCCH); or
a radio resource control (RRC) message; and
activate the TCI state associated with the second cell in response to receiving the at least one control parameter, wherein communicating the second transport block is based on the TCI state.
8 . A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors of a wireless device, cause the wireless device to:
restart a first deactivation timer of a first cell in response to at least one of:
receiving first downlink control information comprising a first uplink grant or a first downlink assignment indicating a resource of the first cell; or
communicating a first transport block via a first configured grant resource of the first cell;
restart a second deactivation timer of a second cell, in response to at least one of:
receiving second downlink control information comprising a second uplink grant or a second downlink assignment indicating a resource of the second cell; or
communicating a second transport block via a second configured grant resource of the second cell;
in response to the first deactivation timer expiring, determine not to deactivate the first cell based on the second deactivation timer not being expired; and
in response to the first deactivation timer and the second deactivation timer expiring, deactivate the first cell and the second cell.
9 . The non-transitory computer-readable medium of claim 8 , wherein the first cell is associated with a first physical cell identifier (PCI), and the second cell is associated with a second PCI.
10 . The non-transitory computer-readable medium of claim 8 , wherein the instructions further cause the wireless device to receive at least one configuration message comprising:
first configuration parameters of the first cell; and
second configuration parameters associated with the first cell and indicating one or more resources of the second cell.
11 . The non-transitory computer-readable medium of claim 10 , wherein the second configuration parameters indicating the second cell are for the wireless device to use resources of the second cell as at least one of:
resources of the first cell;
a transmission and reception point (TRP) of the first cell; or
a transmission configuration indication (TCI) state of the first cell.
12 . The non-transitory computer-readable medium of claim 10 , wherein:
the at least one configuration message comprises a radio resource control (RRC) configuration message comprising a second time value of the second deactivation timer of the second cell; and
the instructions further cause the wireless device to:
determine an expiration of the first deactivation timer of the first cell; and
keep an active state of the first cell, while the first deactivation timer of the first cell is expired, based on at least one of:
the second deactivation timer of the second cell being not expired or running; or
communication via the second cell.
13 . The non-transitory computer-readable medium of claim 10 , wherein the at least one configuration message comprises a first time value of the first deactivation timer of the first cell.
14 . The non-transitory computer-readable medium of claim 8 , wherein the instructions further cause the wireless device to:
receive at least one control parameter indicating a transmission configuration indication (TCI) state associated with at least one downlink reference signal of the second cell, wherein the receiving of the at least one control parameter is via at least one of:
a medium access control (MAC) control element (CE);
downlink control information (DCI) via a physical downlink control channel (PDCCH); or
a radio resource control (RRC) message; and
activate the TCI state associated with the second cell in response to receiving the at least one control parameter, wherein communicating the second transport block is based on the TCI state.
15 . A method comprising:
restarting, by a wireless device, a first deactivation timer of a first cell in response to at least one of:
receiving first downlink control information comprising a first uplink grant or a first downlink assignment indicating a resource of the first cell; or
communicating a first transport block via a first configured grant resource of the first cell;
restarting a second deactivation timer of a second cell, in response to at least one of:
receiving second downlink control information comprising a second uplink grant or a second downlink assignment indicating a resource of the second cell; or
communicating a second transport block via a second configured grant resource of the second cell;
in response to the first deactivation timer expiring, determining not to deactivate the first cell based on the second deactivation timer not being expired; and
in response to the first deactivation timer and the second deactivation timer expiring, deactivating the first cell and the second cell.
16 . The method of claim 15 , wherein the first cell is associated with a first physical cell identifier (PCI), and the second cell is associated with a second PCI.
17 . The method of claim 15 , further comprising receiving at least one configuration message comprising:
first configuration parameters of the first cell; and
second configuration parameters associated with the first cell and indicating one or more resources of the second cell.
18 . The method of claim 17 , wherein the second configuration parameters indicating the second cell are for the wireless device to use resources of the second cell as at least one of:
resources of the first cell;
a transmission and reception point (TRP) of the first cell; or
a transmission configuration indication (TCI) state of the first cell.
19 . The method of claim 17 , further comprising:
determining an expiration of the first deactivation timer of the first cell, wherein the at least one configuration message further comprises a radio resource control (RRC) configuration message comprising a second time value of the second deactivation timer of the second cell; and
keeping an active state of the first cell, while the first deactivation timer of the first cell is expired, based on at least one of:
the second deactivation timer of the second cell being not expired or running; or
communication via the second cell.
20 . The method of claim 15 , further comprising:
receiving at least one control parameter indicating a transmission configuration indication (TCI) state associated with at least one downlink reference signal of the second cell, wherein the receiving the at least one control parameter is via at least one of:
a medium access control (MAC) control element (CE);
downlink control information (DCI) via a physical downlink control channel (PDCCH); or
a radio resource control (RRC) message; and
activating the TCI state associated with the second cell in response to receiving the at least one control parameter, wherein the communicating the second transport block is based on the TCI state.